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67871RECLASSIFY CONTINGENCY24/03/2019 05:06:30 PM
Reclassification of a Non-Credible Contingency Event: Dederang - Glenrowan No.1 220 kV line and Dederang - Glenrowan No.3 220 kV line in VIC1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: VIC1
Lines: Dederang - Glenrowan No.1 220 kV and Dederang - Glenrowan No.3 220 kV
Duration: 24/03/2019 17:06 until further notice
Constraint set(s) invoked:
V-DDGN_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
V-SA
VIC1-NSW1
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: VIC1
Lines: Dederang - Glenrowan No.1 220 kV and Dederang - Glenrowan No.3 220 kV
Duration: 24/03/2019 17:06 until further notice
Constraint set(s) invoked:
V-DDGN_N-2 Constraint set contains the following interconnector(s) on the left hand side:
V-S-MNSP1
V-SA
VIC1-NSW1
Auto-generated on behalf of Manager NEM Real Time Operations
67870RECLASSIFY CONTINGENCY24/03/2019 05:06:30 PM
Reclassification of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV line in VIC1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 24/03/2019 17:06 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 24/03/2019 17:06 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
67869MARKET INTERVENTION24/03/2019 02:59:45 PM
AEMO Intervention Event - Intervention price dispatch intervals - 24/03/2019
AEMO ELECTRICITY MARKET NOTICE.
AEMO Intervention Event - Intervention price dispatch intervals - 24/03/2019
Refer AEMO Electricity Market Notice no. 67868
An AEMO Intervention Event occurred when AEMO issued a direction to maintain the power system in a secure operating state.
The AEMO Intervention Event commenced in the 1505 hrs dispatch interval and is forecast to apply until 1400 hrs 25/03/2019.
AEMO declares all dispatch intervals during the AEMO Intervention Event to be intervention price dispatch intervals.
The direction is expected to affect dispatch quantities for intervention pricing purposes from the 2305 hrs dispatch interval on 24/03/2019.
Manager NEM Real Time Operations
AEMO Intervention Event - Intervention price dispatch intervals - 24/03/2019
Refer AEMO Electricity Market Notice no. 67868
An AEMO Intervention Event occurred when AEMO issued a direction to maintain the power system in a secure operating state.
The AEMO Intervention Event commenced in the 1505 hrs dispatch interval and is forecast to apply until 1400 hrs 25/03/2019.
AEMO declares all dispatch intervals during the AEMO Intervention Event to be intervention price dispatch intervals.
The direction is expected to affect dispatch quantities for intervention pricing purposes from the 2305 hrs dispatch interval on 24/03/2019.
Manager NEM Real Time Operations
67868MARKET INTERVENTION24/03/2019 02:56:04 PM
Direction - South Australia region 24/03/2019
AEMO ELECTRICITY MARKET NOTICE.
Direction - South Australia region 24/03/2019
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the South Australia region.
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided.
A further market notice will be issued when all directions related to this requirement have been cancelled.
For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
Manager NEM Real Time Operations
Direction - South Australia region 24/03/2019
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the South Australia region.
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided.
A further market notice will be issued when all directions related to this requirement have been cancelled.
For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
Manager NEM Real Time Operations
67866MARKET INTERVENTION23/03/2019 05:52:26 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
The synchronous generating units expected to be synchronised in SA from 24/03/2019 2300 hrs to 25/03/2019 1400 hrs in Pre-dispatch published at 23/03/2019 1730 hrs are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 24/03/2019 1500 hrs, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
The synchronous generating units expected to be synchronised in SA from 24/03/2019 2300 hrs to 25/03/2019 1400 hrs in Pre-dispatch published at 23/03/2019 1730 hrs are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 24/03/2019 1500 hrs, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
67865RECLASSIFY CONTINGENCY23/03/2019 11:56:20 AM
Cancellation of a Non-Credible Contingency Event: Tungatinah - New Norfolk tee Meadowbank 1 110KV line and Tungatinah - New Norfolk tee Meadowbank 2 110KV line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Tungatinah - New Norfolk tee Meadowbank 1 110KV and Tungatinah - New Norfolk tee Meadowbank 2 110KV
Cancellation time: 23/03/2019 11:56
Constraint set(s) revoked:
T-TU_MB_NN_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 67859
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Tungatinah - New Norfolk tee Meadowbank 1 110KV and Tungatinah - New Norfolk tee Meadowbank 2 110KV
Cancellation time: 23/03/2019 11:56
Constraint set(s) revoked:
T-TU_MB_NN_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 67859
Auto-generated on behalf of Manager NEM Real Time Operations
67864RECLASSIFY CONTINGENCY23/03/2019 11:37:34 AM
Cancellation of a Non-Credible Contingency Event: Farrell - Sheffield Nos.1 and 2 220 kV Lines in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Farrell - Sheffield Nos.1 and 2 220 kV Lines
Cancellation time: 23/03/2019 11:10
Constraint set(s) revoked:
T-FASH_N-2_CP4_S1
Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 67858
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Farrell - Sheffield Nos.1 and 2 220 kV Lines
Cancellation time: 23/03/2019 11:10
Constraint set(s) revoked:
T-FASH_N-2_CP4_S1
Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 67858
Auto-generated on behalf of Manager NEM Real Time Operations
67863RECLASSIFY CONTINGENCY23/03/2019 11:34:40 AM
Cancellation of a Non-Credible Contingency Event: Chapel St - Liapootah No.1 220 kV line and Chapel St - Liapootah No.2 220 kV line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Chapel St - Liapootah No.1 220 kV and Chapel St - Liapootah No.2 220 kV
Cancellation time: 23/03/2019 11:34
Constraint set(s) revoked:
T-CSLI_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 67860
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Chapel St - Liapootah No.1 220 kV and Chapel St - Liapootah No.2 220 kV
Cancellation time: 23/03/2019 11:34
Constraint set(s) revoked:
T-CSLI_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Refer AEMO Electricity Market Notice 67860
Auto-generated on behalf of Manager NEM Real Time Operations
67862RECLASSIFY CONTINGENCY23/03/2019 11:09:40 AM
Cancellation of a Non-Credible Contingency Event: Farrell - Reece No.1 220 kV line and Farrell - Reece No.2 220 kV line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV
Cancellation time: 23/03/2019 11:09
Constraint set(s) revoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Refer AEMO Electricity Market Notice 67856
Auto-generated on behalf of Manager NEM Real Time Operations
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS1
Lines: Farrell - Reece No.1 220 kV and Farrell - Reece No.2 220 kV
Cancellation time: 23/03/2019 11:09
Constraint set(s) revoked:
F-T-FARE_N-2 Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Refer AEMO Electricity Market Notice 67856
Auto-generated on behalf of Manager NEM Real Time Operations